whats up with them i ordered a replacment set and thier 4ohm and my old ones where 10 ohm whats the difference here???

 

The difference is the amount of resistance they present to the amp...whether that amp is in your head unit or external. Replacing a 10 ohm speaker with a 4 ohm speaker can be bad news for your equipment. Your new speakers have less than half the resistance of the originals so they will draw twice as much current. Doubling the current drawn through your radio means almost certain death. At very least it will dramatically reduce the life span of your head unit.


To be honest though, most of the 10 ohm speakers I've seen usually came out of older cars. Weird.

 

Since you have the 4 ohm speakers...it's the perfect time to upgrade the head unit a well

 

That would depend on the the amp, that is a pretty general statement, any radio or head will only make so much power ( what it's rated at or close, usually), if it is a factory unit it will probably be fine. The 4 ohm speakers will let the amp unit make more power. Unless you are in to a big watt system, I wouldn't worry about it. My experience w/ 10 and 8 ohm speakers is that if you test them, they are usally right @ about 6ohms. A big watt system is made to run @ 2ohms or less usually. like I said I would not worry about it. If nothing else you will pull a few more watts of power out of your existing unit.
Understand that most units are rated when running wide open, where they usually are distorting beyond intelligible audibility. The 4ohm speakers at 1/2 volume will probably sound better, just because the amp will be making more power at audibly clean and clear levels.
The above quote would be correct at levels where the volume is all the way open, for extended periods of time, but for normal use, you should be fine....

 

Understand that most units are rated when running wide open




i did not know that but it makes sense. at what point do you think someone should start running a capacitor? opinions?

 

It never hurts to run a capictor, protection is good, again, that is a general question, specifics would help. But if you are gonna listen loud for long periods of time, components, (amps , speakers, wire) build heat and resistance, capictors help as inline protection... In other words they are usually a good idea!

 

caps are strictly a band-aid for an electrical system and does not solve the inherent issues.

First, you should have had 4 ohm speakers to begin with, so something was changed before you got the car. most car audio speakers are 4 ohm and most decks/amps/etc are meant to handle them with ease.

second, do you have an amp or just running off the stock deck?

finally, if you're going to upgrade your setup, then the first thing you should do is upgrade the big 3. it will allow more amperage to flow throughout your electrical system and reduce voltage drop when it comes to musical passages that require more power (heavy bass mainly).

 

I had the dash pad off last week and took a look at the original factory speakers. They said 10 ohms on the backs of them.

I'd definitely recommend the InnovativeWiring.com battery cables for anybody, even if they have a stock stereo.

4 ohm speakers shouldn't be a problem for any car stereo.